Q1. What is the ability of a plant to develop different structures from the same meristem called?A. TotipotencyB. PlasticityC. DedifferentiationD. Redifferentiation
Q2. Which of the following statements about cytokinin is incorrect?A. Cytokinin promotes cell division.B. Cytokinin delays senescence.C. Cytokinin promotes root growth more than shoot growth.D. Cytokinin works antagonistically with auxin.
Q3. Which of the following is an example of environmental heterophylly?A. Different leaf types in corianderB. Cotton leaves of different shapesC. Buttercup leaves in air and waterD. Larkspur leaf variations
Q4. What is the role of lateral meristem in plant growth?A. Increase in leaf sizeB. Increase in stem lengthC. Increase in stem girthD. Development of flowers
Q5. Which of the following statements about cytokinins is correct?A. Cytokinins promote root growth over shoot growth.B. Cytokinins are primarily produced in root tips.C. Cytokinins promote leaf senescence.D. Cytokinins inhibit cell division.
Q6. Select the correct statement about plant growth:A. Growth in plants is reversible.B. Growth results from cell division and cell enlargement.C. Primary growth increases the thickness of plants.D. Secondary growth is observed in monocots.
Q7. Which of the following statements about ethylene is incorrect?A. Ethylene promotes fruit ripening.B. Ethylene accelerates leaf abscission.C. Ethylene delays seed germination.D. Ethylene inhibits flower senescence.
Q8. Which phase of plant growth involves rapid cell division and large nuclei?A. Maturation phaseB. Elongation phaseC. Meristematic phaseD. Stationary phase
Q9. Which type of growth pattern results when both daughter cells produced by mitosis retain the ability to divide?A. Arithmetic growthB. Geometric growthC. Sigmoid growthD. Linear growth
Q10. Which type of growth pattern results in an S-shaped (sigmoid) curve?A. Arithmetic growthB. Geometric growthC. Linear growthD. Logarithmic growth